Materials Literature
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A new technique for producing hollow shell laser fusion fuel capsules has been developed that starts with a depolymerizable mandrel. In this technique we use poly(α-methylstyrene) (PAMS) beads or shells as mandrels which are overcoated with plasma polymer. The PAMS mandrel is thermally depolymerized to gas phase monom…
Amorphous carbon films grown by low-energy mass-selected ion-beam deposition have been characterized by inelastic and elastic electron scattering. Films were grown using deposition energies from 10 up to 2000 eV. Most samples were deposited at room temperature with a few deposited at elevated substrate temperatures. T…
An increasingly urgent topic for the realization of densely packed (mixed signal) integrated circuits is prevention of cross-talk via the substrate. This paper proposes a Boundary Element Method (BEM) for calculating an admittance matrix for the substrate in order to analyze the parasitic coupling during layout verifi…
Dendritic chromatophores that contained blue pigmentary organelles were found in the bluish parts of the skin of two callionymid species, the mandarin fish, Synchiropus splendidus, and the psychedelic fish, S. picturatus. We named these novel cells “cyanophores” and the organelles “cyanosomes”. In response to various…
We present results from a Monte Carlo study of polymer adsorption from solution at a solid-liquid interface, in the limit of infinitely large adsorption energy. We study the kinetics of adsorbed layer formation for both the cases of end-functionalized chains and homopolymers. In the former case, the adsorbed layer is…
The temperature dependence of 〈111〉 tilt grain boundaries with angles of misorientation of 38·2° and 40·5° was investigated in bicrystals of both pure (99·999%) Al and the same Al doped with 10ppmGa in the temperature regime between 400 and 580°C. The grain boundary mobility for the investigated grain boundaries over…
Shape memory alloys (SMA) are a class of materials proposed to be used as actuator elements in smart structures. They undergo a reversible martensitic phase transformation during thermal cycling. In this work, 55-nitinol (55% nickel-45% titanium shape memory alloy) was investigated to determine the effect of training…
Toxic and/or carcinogenic consequences may result from metal ion substitution for the Zn-(II) in transcription factors containing zinc fingers, and the small Cys-rich metal-binding protein metallothionein (MT) may play a role in this metal substitution. To begin to evaluate this hypothesis, with regard to the carcinog…
SUMMARY The L 3 to L 2 white‐line intensity ratios of Mn in solid solution in yttria‐stabilized zirconia and in Mn oxide standards are measured using different approaches. We show that the L 3 /L 2 ratio alone cannot be used as a means of deducing the oxidation state and that a combined analysis of this ratio and the…
The UvrABC endonuclease from Escherichia coli repairs damage in the DNA by dual incision of the damaged strand on both sides of the lesion. The incisions are in an ordered fashion, first on the 3'-side and next on the 5'-side of the damage, and they are the result of binding of UvrC to the UvrB-DNA preincision complex…
Abstract Creep and differential scanning calorimetry (DSC) measurements have been used to study the physical aging behavior of a polyetherimide. Isothermal aging temperatures ranged from 160°C to T g with aging times ranging from 10 min to 8 days. The only measurable effect of physical aging on the short‐time creep cu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelf-Assembled Monolayer Coatings on Nanosized Magnetic Particles Using 16-Mercaptohexadecanoic AcidQingxia Liu and Zhenghe XuCite this: Langmuir 1995, 11, 12, 4617–4622Publication Date (Print):December 1, 1995Publication History Published online1 May 2002Published inissue 1…
A combined theoretical/experimental study of the heat transfer in thermoelectric shape memory alloy (SMA) actuators is undertaken in this paper. A one-dimensional model of a thermoelectric unit cell with a SMA junction is developed first and the transient temperatures in the SMA are evaluated for different applied ele…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConductivity In Redox Modified Conducting Polymers. 2. Enhanced Redox Conductivity in Ferrocene-Substituted Polypyrroles and PolythiophenesGianni Zotti, Sandro Zecchin, Gilberto Schiavon, Anna Berlin, Giorgio Pagani, and Augusto CanavesiCite this: Chem. Mater. 1995, 7, 12, 2…
Abstract Chromium (III) 2p photoelectron spectra show strong satellites on the high‐binding‐energy side of the main photoelectron peaks. In the case of Cr 2p spectra, the satellite of the Cr 2p 3/2 peak strongly overlaps the Cr 2p 1/2 peak. As a result, a virtual three‐peak spectrum is obtained. In order to analyse th…
The time function of the Eyring reaction rate theory of insulation life is modified to demonstrate a physical origin for temperature threshold. Various mechanisms by which trapped charges may be involved in degrading the polymer are examined, and incorporated into the life model through an alteration to the free energ…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInhomogeneous Structure of Collapsed Polymer Brushes Under DeformationE. B. Zhulina, T. M. Birshtein, V. A. Priamitsyn, and L. I. KlushinCite this: Macromolecules 1995, 28, 25, 8612–8620Publication Date (Print):December 1, 1995Publication History Published online1 May 2002Pu…
An elusive goal—that of enforcing the interaction of an electron donor at a polyoxometalate acceptor in solution—has been realized. Covalent tethering of a ferrocenyl group to the hexamolybdate cluster was achieved by the introduction of a ferrocenylimido (FcN) ligand, yielding the anion [(FcN)Mo6O18]2− 1 (shown schem…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntrinsic Coordination Properties of Iron in FeO+: Kinetics at 294 .+-. 3 K for Gas-Phase Reactions of the Ground States of Fe+ and FeO+ with Inorganic Ligands Containing Hydrogen, Nitrogen, and OxygenVladimir Baranov, Gholamreza Javahery, Alan C. Hopkinson, and Diethard K.…
Abstract According to XRD, DTA, geochemistry and electron microscopy data of a few selected samples, three categories of smectitic clay minerals occur in the Cenomanian and Turonian chalks sampled in several sections of northern France. The first one corresponds to detrital illitesmectite mixed-layers reworked from pe…